TY - JOUR AU - Barberis,Nicholas AU - Shleifer,Andrei TI - Style Investing JF - National Bureau of Economic Research Working Paper Series VL - No. 8039 PY - 2000 Y2 - December 2000 UR - http://www.nber.org/papers/w8039 L1 - http://www.nber.org/papers/w8039.pdf N1 - Author contact info: Nicholas C. Barberis Yale School of Management 135 Prospect Street P O Box 208200 New Haven, CT 06520-8200 Tel: 203/436-0777 Fax: 203/432-6970 E-Mail: nick.barberis@yale.edu Andrei Shleifer Department of Economics Harvard University Littauer Center M-9 Cambridge, MA 02138 Tel: 617/495-5046 Fax: 617/496-1708 E-Mail: ashleifer@harvard.edu AB - We study asset prices in an economy where some investors classify risky assets into different styles and move funds back and forth between these styles depending on their relative performance. Our assumptions imply that news about one style can affect the prices of other apparently unrelated styles, that assets in the same style will comove too much while assets in different styles comove too little, and that high average returns on a style will be associated with common factors for reasons unrelated to risk. They also lead to a rich pattern of own- and cross-autocorrelations, sample premia that can be very different from true premia, and imply that style momentum strategies will be profitable. We use our model to shed light on many puzzling features of the data. ER -